Rural rainwater and sewage automatic diversion structure

Abstract

The invention discloses a rural rainwater and sewage automatic diversion structure, which comprises a confluence pipe for introducing incoming rainwater and sewage, and also comprises a sewage eduction pipe and a rainwater eduction pipe, the rainwater eduction pipe is located on the upper layer of the sewage eduction pipe, and the confluence pipe, the rainwater eduction pipe and the sewage eduction pipe form a three-way pipe body; a rainwater / sewage switching and blocking structure is arranged in the three-way pipe body; when the flow of the rainwater and sewage incoming water guided into the confluence pipe is smaller than a preset value, the rainwater / sewage switching blocking structure conducts the confluence pipe and the sewage leading-out pipe, and the rainwater and sewage incoming water guided into the confluence pipe flows out through the sewage leading-out pipe; and when the flow of the rainwater and sewage incoming water guided into the confluence pipe is larger than a preset value, the rainwater / sewage switching blocking structure blocks the sewage leading-out pipe, and the rainwater and sewage incoming water guided into the confluence pipe flows out through the rainwater leading-out pipe.

Description

TECHNICAL FIELD

[0001] The present application relates to a shunt structure, in particular to a rural automatic rain and sewage shunt structure. BACKGROUND

[0002] In the existing rural rain and sewage discharge treatment structure, since the future economic development and the increase of sewage discharge are not fully considered, domestic sewage does not have a separate sewage pipe network, but adopts the form of rainwater and domestic sewage sharing a drainage pipe, that is, the combined rain and sewage system.

[0003] With the development of economy and the enhancement of environmental awareness, combined with the increasing preciousness of water resources, in order to better utilize various water resources, the drainage mode of rainwater and sewage each using a drainage pipe, that is, rain and sewage shunt, is implemented. The rainwater can be collected through the rainwater pipe network, and then concentrated utilization and centralized management discharge are carried out, so as to improve the utilization rate of water resources. The sewage is collected through the sewage pipe network and then sent to the sewage treatment plant for treatment, avoiding the pollution caused by the direct entry of sewage into the river, and reducing the impact of water quantity on the sewage treatment plant, so as to ensure the treatment efficiency of the sewage treatment plant.

[0004] In summary, the adaptive reconstruction of the existing combined rain and sewage system in rural areas is an urgent problem to be solved at present. SUMMARY

[0005] The present application provides a rural automatic rain and sewage shunt structure.

[0006] The rural automatic rain and sewage shunt structure provided by the present application comprises a combined pipe for introducing rain and sewage, a sewage outlet pipe and a rainwater outlet pipe, wherein the rainwater outlet pipe is located on the upper layer of the sewage outlet pipe, and the combined pipe, the rainwater outlet pipe and the sewage outlet pipe form a three-way pipe body.

[0007] A rainwater / sewage switching and blocking structure is arranged in the three-way pipe body.

[0008] When the flow of rain and sewage introduced into the combined pipe is less than a predetermined value, the rainwater / sewage switching and blocking structure connects the combined pipe and the sewage outlet pipe, and the rain and sewage introduced into the combined pipe flows out through the sewage outlet pipe.

[0009] When the flow of rain and sewage introduced into the combined pipe is greater than the predetermined value, the rainwater / sewage switching and blocking structure blocks the sewage outlet pipe, and the rain and sewage introduced into the combined pipe flows out through the rainwater outlet pipe.

[0010] In the rural automatic rain and sewage shunt structure provided by the present application, the rainwater / sewage switching and blocking structure comprises a rainwater outlet pipe propeller blade, a sewage outlet pipe propeller blade and a one-way transmission assembly.

[0011] The rainwater guide pipe propeller blade is installed on the upper part of the one-way transmission assembly and located at the front end of the rainwater guide pipe, and the propeller blade of the rainwater guide pipe propeller blade faces the direction of the incoming water of the rainwater guide pipe;

[0012] The sewage guide pipe propeller blade is installed on the lower part of the one-way transmission assembly and located at the front end of the sewage guide pipe, and the propeller blade of the sewage guide pipe propeller blade faces the direction of the incoming water of the sewage guide pipe;

[0013] When there is no rain or the rainfall is small, the flow of the rainwater and sewage in the combined pipe is less than a predetermined value, the sewage guide pipe propeller blade is rotated counterclockwise by the rainwater and sewage, the rainwater guide pipe propeller blade is static, and the rainwater and sewage in the combined pipe flows out through the sewage guide pipe;

[0014] When the rainfall is large, the flow of the rainwater and sewage in the combined pipe is greater than a predetermined value, the rainwater and sewage flows out through the rainwater guide pipe, the rainwater and sewage pushes the rainwater guide pipe propeller blade to rotate counterclockwise, and the rainwater guide pipe propeller blade in the counterclockwise state drives the sewage guide pipe propeller blade to rotate clockwise through the one-way transmission assembly, the sewage guide pipe propeller blade in the clockwise state generates a thrust force towards the rainwater and sewage, thereby preventing the rainwater and sewage from entering the sewage guide pipe and flowing out through the rainwater guide pipe.

[0015] In the rural rainwater and sewage automatic diversion structure, the one-way transmission assembly comprises a support frame body arranged vertically;

[0016] The support frame body is provided with a rotating shaft support frame corresponding to the lower part where the sewage guide pipe is located, and the rotating shaft of the sewage guide pipe propeller blade is installed through the rotating shaft support frame; a transmission disc is installed at the rear end of the rotating shaft of the sewage guide pipe propeller blade;

[0017] The support frame body comprises a propeller blade support frame arranged at the front end of the rainwater and sewage and a driving disc support frame arranged at the rear end of the rainwater and sewage corresponding to the upper part where the rainwater guide pipe is located;

[0018] The rotating shaft of the rainwater guide pipe propeller blade can slide forward and backward through the propeller blade support frame, and an elastic member is arranged in the rotating shaft through hole of the propeller blade support frame to push the rotating shaft forward; a clamping disc is arranged at the rear end of the rotating shaft, and protruding clamping teeth are arranged on the clamping disc at intervals;

[0019] A driving disc is arranged on the driving disc support frame, the driving disc comprises an outer disc and an inner disc arranged concentrically, and a one-way clamping ratchet is arranged between the outer disc and the inner disc;

[0020] A clamping disc is coaxially arranged at the front end of the inner disc, and protruding clamping teeth are arranged on the clamping disc at intervals; the outer disc is connected with the transmission disc through a transmission belt;

[0021] When the rainwater and sewage water pushes the rainwater guide pipe propeller to rotate counterclockwise, the rainwater guide pipe propeller is simultaneously impacted by the rainwater and sewage water and moves backward, so that the clamping disc is connected with the clamping disc, and the inner disc is driven to rotate counterclockwise synchronously;

[0022] The outer disc is driven by the one-way clamping ratchet to rotate counterclockwise synchronously with the inner disc, and the transmission disc is driven by the transmission belt to rotate clockwise, so that the sewage guide pipe propeller rotates clockwise.

[0023] In the rural rainwater and sewage automatic diversion structure, the rainwater / sewage switching barrier structure comprises a barrier valve piece capable of switching positions between the sewage guide pipe and the rainwater guide pipe, a rain control assembly for driving the barrier valve piece to flip downward to block the rainwater and sewage water from flowing into the sewage guide pipe, and a positioning spring for driving the barrier valve piece to flip upward to block the rainwater and sewage water from flowing into the rainwater guide pipe;

[0024] When there is no rain or the rainfall is small, the flow of the rainwater and sewage water introduced into the combined pipe is less than a predetermined value, the positioning spring pulls the barrier valve piece to flip upward to block the inlet of the rainwater guide pipe;

[0025] When the rainfall is large, the flow of the rainwater and sewage water introduced into the combined pipe is greater than the predetermined value, and the rain control assembly drives the barrier valve piece to flip downward to block the inlet of the sewage guide pipe.

[0026] In the rural rainwater and sewage automatic diversion structure, the rain control assembly comprises a support pipe exposed on the ground, a rain collecting cavity capable of sliding up and down in the support pipe is arranged in the support pipe, a rain leakage hole is formed in the peripheral wall of the rain collecting cavity, and the rain collecting cavity is connected to the barrier valve piece through a pull wire;

[0027] When the rainfall is large, rainwater falls into the rain collecting cavity and drives the rain collecting cavity to move downward along the support pipe, and the rain collecting cavity in the downward moving state drives the barrier valve piece to flip downward through the pull wire, thereby blocking the inlet of the sewage guide pipe.

[0028] In the rural automatic rainwater and sewage separation structure described in this invention, a rainwater / sewage switching barrier structure is used to separate rainwater and sewage inflow. This ensures that when the rainwater and sewage inflow exceeds a predetermined value (i.e., when rainfall reaches a certain level), it no longer flows into the sewage outlet pipe but instead flows out through the rainwater outlet pipe. This facilitates subsequent rainwater collection through the pipe network and promotes centralized utilization and management of rainwater discharge, thereby improving water resource utilization efficiency. Furthermore, when the rainwater and sewage inflow is less than the predetermined value (i.e., when there is no rain or rainfall is relatively low), the existing sewage outlet pipe continues to discharge the rainwater and sewage, thus maintaining the normal operation of the rural drainage system. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the automatic rainwater and sewage separation structure in rural areas described in this invention;

[0030] Figure 2 for Figure 1 Another schematic diagram of an automatic rainwater and sewage separation structure in rural areas is shown.

[0031] Figure 3 for Figure 1 The diagram shows a unidirectional transmission component in an automatic rainwater and sewage separation structure for rural areas.

[0032] Figure 4 This is another schematic diagram of the automatic rainwater and sewage separation structure in rural areas described in this invention;

[0033] Figure 5 This is another schematic diagram of the automatic rainwater and sewage separation structure in rural areas described in this invention;

[0034] Figure 6 for Figure 4 The diagram shows the structure of the rain control component in the automatic rainwater and sewage separation structure in rural areas. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6As shown, the rural automatic rain and sewage shunting structure comprises a combined pipe 1 for introducing rain and sewage, a sewage outlet pipe 3 and a rainwater outlet pipe 2, wherein the rainwater outlet pipe 2 is located on the upper layer of the sewage outlet pipe 3, and the combined pipe 1, the rainwater outlet pipe 2 and the sewage outlet pipe 3 form a tee pipe body 100. A rainwater / sewage switching barrier structure 10 is arranged in the tee pipe body 100. When the flow of rain and sewage introduced into the combined pipe 1 is less than a predetermined value, the rainwater / sewage switching barrier structure 10 connects the combined pipe 1 and the sewage outlet pipe 3, and the rain and sewage introduced into the combined pipe 1 flows out through the sewage outlet pipe 3 (the flow direction of rain and sewage is shown by arrows in Figure 1 , or Figure 4 ). When the flow of rain and sewage introduced into the combined pipe 1 is greater than the predetermined value, the rainwater / sewage switching barrier structure 10 blocks the sewage outlet pipe 3, and the rain and sewage introduced into the combined pipe 1 flows out through the rainwater outlet pipe 2 (the flow direction of rain and sewage is shown by arrows in Figure 2 , or Figure 5 ).

[0037] In the rural automatic rain and sewage shunting structure, the rain and sewage are shunted by the rainwater / sewage switching barrier structure 10, so that when the rain and sewage is greater than the predetermined value (i.e., when the rainfall reaches a certain value), the rain and sewage no longer flows into the sewage outlet pipe 3, but flows out through the rainwater outlet pipe 2, thereby facilitating subsequent rainwater pipe network collection, and being conducive to centralized utilization and centralized management of rainwater discharge, and improving water resource utilization rate. When the rain and sewage is less than the predetermined value (i.e., when there is no rain or the rainfall is small), the rain and sewage is still discharged through the current sewage outlet pipe 3, thereby maintaining the normal operation of the rural drainage system.

[0038] Specifically, as shown in Figure 1 , Figure 2 , Figure 3As shown, the rainwater / sewage switching barrier structure 10 comprises a rainwater outlet pipe propeller blade 5, a sewage outlet pipe propeller blade 6, and a one-way transmission assembly. The rainwater outlet pipe propeller blade 5 is installed on the upper part of the one-way transmission assembly and located at the front end of the rainwater outlet pipe 2, and the propeller blade of the rainwater outlet pipe propeller blade 5 faces the direction of the incoming water of the rainwater outlet pipe 2. The sewage outlet pipe propeller blade 6 is installed on the lower part of the one-way transmission assembly and located at the front end of the sewage outlet pipe 3, and the propeller blade of the sewage outlet pipe propeller blade 6 faces the direction of the incoming water of the sewage outlet pipe 3, that is, the propeller blades of the rainwater outlet pipe propeller blade 5 and the sewage outlet pipe propeller blade 6 both face the direction of the incoming rainwater and sewage (i.e. the direction of the combined pipe 1). When the incoming rainwater and sewage impact the rainwater outlet pipe propeller blade 5 or the sewage outlet pipe propeller blade 6, the propeller blades of the rainwater outlet pipe propeller blade 5 and the sewage outlet pipe propeller blade 6 will rotate counterclockwise (here, the counterclockwise rotation is observed from the direction of the combined pipe 1 facing the sewage outlet pipe 3). Alternatively, when the rainwater outlet pipe propeller blade 5 or the sewage outlet pipe propeller blade 6 rotates counterclockwise, it will promote the flow of the incoming rainwater and sewage through the rainwater outlet pipe 2 or the sewage outlet pipe 3. Conversely, if the rainwater outlet pipe propeller blade 5 or the sewage outlet pipe propeller blade 6 rotates clockwise, it will hinder the flow of the incoming rainwater and sewage into the rainwater outlet pipe 2 or the sewage outlet pipe 3.

[0039] In this embodiment, when there is no rain or the rainfall is small, the flow of the incoming rainwater and sewage in the combined pipe 1 is less than a predetermined value, at this time, the incoming rainwater and sewage can only fill or partially fill the sewage outlet pipe 3, the sewage outlet pipe propeller blade 6 is driven by the incoming rainwater and sewage to rotate counterclockwise, the incoming rainwater and sewage in the combined pipe 1 flows out through the sewage outlet pipe 3 (as shown in the state), and the rainwater outlet pipe propeller blade 5 is in a static state. Figure 1

[0040] When the rainfall is large, the flow of the incoming rainwater and sewage in the combined pipe 1 is greater than the predetermined value, at this time, the water surface of the incoming rainwater and sewage rises and overflows to the rainwater outlet pipe 2, and the incoming rainwater and sewage flows out through the rainwater outlet pipe 2. At the same time, the incoming rainwater and sewage also drives the rainwater outlet pipe propeller blade 5 to rotate counterclockwise, in this embodiment, the rainwater outlet pipe propeller blade 5 in the counterclockwise rotating state drives the sewage outlet pipe propeller blade 6 to rotate clockwise through the one-way transmission assembly, and the sewage outlet pipe propeller blade 6 in the clockwise rotating state generates a thrust force towards the incoming rainwater and sewage, that is, it blocks the incoming rainwater and sewage from flowing into the sewage outlet pipe 3, and the incoming rainwater and sewage from the combined pipe 1 flows out through the rainwater outlet pipe 2.

[0041] ​In the embodiment, the one-way transmission assembly specifically comprises a vertically arranged support frame 4. The support frame 4 is provided with a rotating shaft support frame 9 corresponding to the lower part where the sewage outlet pipe 3 is arranged, and the rotating shaft 61 of the sewage outlet pipe propeller blade 6 is installed through the rotating shaft support frame 9. A transmission disc 62 is installed at the rear end of the rotating shaft 61 of the sewage outlet pipe propeller blade 6.

[0042] The support frame 4 comprises a blade support frame 7 arranged at the front end of the rainwater and sewage inlet and a driving disc support frame 8 arranged at the rear end of the rainwater and sewage inlet corresponding to the upper part where the rainwater outlet pipe 2 is arranged. The rotating shaft 51 of the rainwater outlet pipe propeller blade 5 can slide forward and backward through the blade support frame 7.

[0043] An elastic member 52 that can push the rotating shaft 51 forward is arranged in the rotating shaft through hole of the blade support frame 7, so that the rotating shaft 51 can be pushed forward (i.e. the rainwater outlet pipe propeller blade 5 moves forward as a whole) when the rainwater and sewage impact is not strong or the impact force is small. When the rainwater and sewage impact is strong enough, the rainwater outlet pipe propeller blade 5 can move backward under the impact of the rainwater and sewage. The elastic member 52 can be a multi-turn spring arranged in the rotating shaft through hole in actual arrangement, so that when the impact force of the rainwater and sewage acting on the rainwater outlet propeller blade 5 is greater than the pushing force of the multi-turn spring, the rainwater outlet propeller blade 5 moves backward; and when the impact force of the rainwater and sewage acting on the rainwater outlet propeller blade 5 is less than the pushing force of the multi-turn spring, the rainwater outlet propeller blade 5 moves forward. A clamping disc 53 is further arranged at the rear end of the rotating shaft 51, and the clamping disc 53 is provided with protruding clamping teeth (not shown in the figure) at intervals.

[0044] A driving disc 9 is arranged on the driving disc support frame 8, and the driving disc 9 specifically comprises a concentrically arranged outer disc 91 and an inner disc 93. A rotating shaft 90 is arranged through the center of the inner disc 93, and the rotating shaft 90 is rotatably installed on the driving disc support frame 8. A one-way clamping ratchet 94 is arranged between the outer disc 91 and the inner disc 93. A clamping disc 92 is coaxially arranged at the front end of the inner disc 93, and the clamping disc 92 is provided with protruding clamping teeth (not shown in the figure) at intervals. The clamping teeth and the clamping teeth on the clamping disc 53 are staggered. The outer disc 91 is connected with the transmission disc 62 through a transmission belt 95 (the transmission belt 95 is arranged in a cross shape to ensure that the rotating directions of the outer disc 91 and the transmission disc 62 are opposite, i.e. when the outer disc 91 rotates counterclockwise, the transmission disc 62 rotates clockwise).

[0045] When the rainwater and sewage inflow is large enough to drive the rainwater outlet pipe propeller blade 5 to rotate counterclockwise, the rainwater outlet pipe propeller blade 5 will also move backward due to the impact of the rainwater and sewage inflow, overcoming the thrust of the elastic member 52 on the rotating shaft 51, so that the clamping disc 53 is in contact with the clamping disc 92 (at this time, the clamping teeth on the clamping disc 53 are embedded between the clamping teeth of the clamping disc 92), so that the clamping disc 53 rotating counterclockwise can drive the clamping disc 92 to rotate counterclockwise synchronously, and further drive the inner disc 93 to rotate counterclockwise synchronously.

[0046] Alternatively, the rotating shaft 51 of the rainwater outlet pipe propeller blade 5 can also be designed to slide forward and backward relative to the propeller blade support frame 7. Similarly, a clamping disc 53 is arranged at the rear end of the rotating shaft 51, and a plurality of clamping teeth gradually rising in the circumferential direction are arranged on the clamping disc 53 (not shown in the figure). Correspondingly, a plurality of clamping teeth gradually rising in the circumferential direction are also arranged on the surface of the clamping disc 92 (not shown in the figure), and the rising directions of the clamping teeth on the clamping disc 53 and the clamping disc 92 are matched with each other. In this way, when the rainwater and sewage inflow impacts the rainwater outlet pipe propeller blade 5, the rotating shaft 51 of the rainwater outlet pipe propeller blade 5 will move backward, and the clamping disc 53 will come into contact with the clamping disc 92. The clamping teeth on the clamping disc 53 and the clamping teeth on the clamping disc 92 gradually abut during rotation, and finally the clamping disc 92 is driven by the clamping disc 53 to rotate counterclockwise synchronously.

[0047] The inner disc 93 rotating counterclockwise drives the outer disc 91 to rotate counterclockwise synchronously through the one-way clamping ratchet 94, and the outer disc 91 drives the driving disc 62 to rotate clockwise through the transmission belt 95, that is, the sewage outlet pipe propeller blade 6 is driven to rotate clockwise. After selecting the appropriate transmission ratio between the outer disc 91 and the driving disc 62 based on the rainwater and sewage inflow, the diameter of the rainwater outlet pipe 2, the diameter of the sewage outlet pipe 3, the blade radius of the rainwater outlet pipe propeller blade 5, and the blade radius of the sewage outlet pipe propeller blade 6, the sewage outlet pipe propeller blade 6 driven by the outer disc 91 has sufficient rotational speed, so it can generate sufficient thrust towards the rainwater and sewage inflow, so as to block the rainwater and sewage inflow from flowing into the sewage outlet pipe 3, but change the flow path to flow out through the rainwater outlet pipe 2 (as shown in the state of Figure 2

[0048] ​On the foregoing basis, if the rainwater and sewage inflow is reduced, so that the impact force of the rainwater and sewage inflow on the rainwater guide pipe propeller blade 5 is not enough to offset the thrust of the elastic member 52, the rotating shaft 51 of the rainwater guide pipe propeller blade 5 moves forward under the thrust of the elastic member 52, so that the clamping disc 53 also moves forward and separates from the clamping disc 92, the clamping disc 92 is no longer driven by the clamping disc 53, and the sewage guide pipe propeller blade 6 also stops clockwise rotation and switches to counterclockwise rotation state driven by the rainwater and sewage inflow.

[0049] The rainwater and sewage automatic shunting structure disclosed by the present application, the rainwater / sewage switching barrier structure 10 can also adopt another structure, that is, as shown in Figure 4 、 Figure 5 、 Figure 6 The rainwater / sewage switching barrier structure 10 includes a barrier valve piece 17 that can switch positions between the sewage guide pipe 3 and the rainwater guide pipe 2, a rain control assembly 19 that drives the barrier valve piece 17 to flip down to block the rainwater and sewage inflow into the sewage guide pipe 3, and a positioning spring 18 that drives the barrier valve piece 17 to flip up to block the rainwater and sewage inflow into the rainwater guide pipe 2. When there is no rain or the rainfall is small, that is, the rainwater and sewage inflow from the combined pipe 1 is less than a predetermined value, the positioning spring 18 pulls the barrier valve piece 17 to flip up to block the entrance of the rainwater guide pipe 2, and the rainwater and sewage inflow from the combined pipe 1 is still discharged from the sewage guide pipe 3. When the rainfall is large, that is, the rainwater and sewage inflow from the combined pipe 1 is greater than a predetermined value, the rain control assembly 19 drives the barrier valve piece 17 to flip down to block the entrance of the sewage guide pipe 3, so that the rainwater and sewage inflow from the combined pipe 1 is discharged from the rainwater guide pipe 2.

[0050] The rain control assembly 19 specifically comprises a support pipe 191 exposed on the ground, a rain collecting cavity 192 is arranged in the support pipe 191 and can slide up and down on the support pipe 191, and the peripheral wall of the rain collecting cavity 192 is provided with a rain leakage hole 921 (the rain leakage hole 921 should be arranged to ensure that when the rainfall is small, the amount of rainwater collected by the rain collecting cavity 192 is less than the amount of rainwater leaked through the rain leakage hole 921 or both are equivalent, and the rain collecting cavity 192 cannot collect and store rainwater; when the rainfall is large, the amount of rainwater leaked through the rain leakage hole 921 is less than the amount of rainwater collected by the rain collecting cavity 192, and the amount of rainwater collected in the rain collecting cavity 192 gradually increases), and the rain collecting cavity 192 is connected to the blocking valve piece 17 through a pull wire 193 (a plurality of fixed pulleys 194 can also be arranged according to the site conditions). In this way, when the rainfall is large, rainwater falls into the rain collecting cavity 192 and drives the rain collecting cavity 192 to move downward along the support pipe 191, the rain collecting cavity 192 in the downward moving state drives the blocking valve piece 17 to flip downward (that is, overcoming the pulling force of the positioning spring 8) through the pull wire 193, thereby blocking the inlet of the sewage leading-out pipe 3, so that the rainwater and sewage from the combined sewer 1 flows into the rainwater leading-out pipe 2 in the direction indicated by the arrow. Figure 5

[0051] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application, and other modifications can be easily realized by those skilled in the art, therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.​

Claims

1. An automatic rainwater and sewage separation structure for rural areas, comprising a combined drain pipe for introducing rainwater and sewage, characterized in that, It also includes a sewage outlet pipe and a rainwater outlet pipe, with the rainwater outlet pipe located above the sewage outlet pipe. The combined pipe, the rainwater outlet pipe, and the sewage outlet pipe form a three-way pipe body. A rainwater / sewage switching barrier structure is installed inside the three-way pipe; When the flow rate of rainwater and sewage introduced into the combined pipe is less than a predetermined value, the rainwater / sewage switching barrier structure connects the combined pipe and the sewage outlet pipe, and the rainwater and sewage introduced into the combined pipe flows out through the sewage outlet pipe. When the flow rate of rainwater and sewage introduced into the combined sewer exceeds a predetermined value, the rainwater / sewage switching barrier structure blocks the sewage outlet pipe, and the rainwater and sewage introduced into the combined sewer flows out through the rainwater outlet pipe.

2. The rural automatic rainwater and sewage separation structure as described in claim 1, characterized in that, The rainwater / sewage switching barrier structure includes a rainwater outlet pipe propeller blade, a sewage outlet pipe propeller blade, and a one-way transmission assembly. The rainwater outlet pipe propeller blade is installed on the upper part of the one-way transmission assembly and located at the front end of the rainwater outlet pipe, with the blade of the rainwater outlet pipe propeller blade facing the direction of the incoming water from the rainwater outlet pipe. The propeller blade of the sewage outlet pipe is installed at the lower part of the one-way transmission assembly and is located at the front end of the sewage outlet pipe. The blade of the propeller blade of the sewage outlet pipe faces the direction of the incoming water of the sewage outlet pipe. When there is no rain or the rainfall is small, the flow rate of rainwater and sewage introduced into the combined pipe is less than a predetermined value. The propeller blade of the sewage outlet pipe is driven by the rainwater and sewage to rotate counterclockwise. The propeller blade of the rainwater outlet pipe remains stationary, and the rainwater and sewage introduced into the combined pipe flows out through the sewage outlet pipe. When rainfall is heavy, the flow rate of rainwater and sewage entering the combined sewer exceeds a predetermined value. The rainwater and sewage overflows into the rainwater outlet pipe and flows out through it. Simultaneously, the rainwater and sewage push the propeller blades of the rainwater outlet pipe to rotate counterclockwise. Furthermore, the counterclockwise rotating propeller blades of the rainwater outlet pipe drive the propeller blades of the sewage outlet pipe to rotate clockwise through the one-way transmission assembly. The clockwise rotating propeller blades of the sewage outlet pipe generate a thrust towards the rainwater and sewage, thereby preventing the rainwater and sewage from entering the sewage outlet pipe and instead allowing it to flow out through the rainwater outlet pipe.

3. The rural automatic rainwater and sewage separation structure as described in claim 2, characterized in that, The unidirectional transmission assembly includes a vertically mounted support frame. A rotating shaft support frame is provided at the lower part of the support frame corresponding to the location of the sewage outlet pipe, and the rotating shaft of the sewage outlet pipe propeller blade is installed through the rotating shaft support frame; a transmission disc is installed at the rear end of the rotating shaft of the sewage outlet pipe propeller blade. The support frame body, corresponding to the upper part where the rainwater outlet pipe is located, includes a blade support frame set at the front end of the rainwater and sewage inlet and a drive disc support frame set at the rear end of the rainwater and sewage inlet. The rotor shaft of the rainwater outlet pipe propeller can slide back and forth through the blade support frame. An elastic element is provided in the rotor shaft through hole of the blade support frame to push the rotor shaft to the front end. A locking plate is provided at the rear end of the rotor shaft, and protruding locking teeth are provided on the locking plate at intervals. A drive disk is provided on the drive disk support frame. The drive disk includes an outer disk and an inner disk arranged concentrically, and a one-way locking ratchet is provided between the outer disk and the inner disk. The inner disk is coaxially provided with a snap-fit ​​disc at its front end, and the snap-fit ​​disc is provided with protruding snap-fit ​​teeth at intervals; the outer disk is connected to the transmission disk via a transmission belt. When the rainwater and sewage push the propeller blades of the rainwater outlet pipe to rotate counterclockwise, the propeller blades of the rainwater outlet pipe are simultaneously impacted by the rainwater and sewage and move backward, so that the locking plate and the locking plate are connected, and the inner plate is driven to rotate counterclockwise synchronously. The outer disc is driven by the one-way ratchet to rotate counterclockwise in sync with the inner disc, and drives the transmission disc to rotate clockwise via the transmission belt, causing the propeller blade of the sewage outlet pipe to rotate clockwise accordingly.

4. The rural automatic rainwater and sewage separation structure as described in claim 1, characterized in that, The rainwater / sewage switching barrier structure includes a barrier valve plate that can switch positions between the sewage outlet pipe and the rainwater outlet pipe, a rain control component that drives the barrier valve plate to flip down to block rainwater and sewage from flowing into the sewage outlet pipe, and a positioning spring that drives the barrier valve plate to flip up to block rainwater and sewage from flowing into the rainwater outlet pipe. When there is no rain or the rainfall is small, the flow rate of rainwater and sewage introduced into the combined pipe is less than the predetermined value, and the positioning spring pulls the blocking valve plate upward to block the inlet of the rainwater outlet pipe. When rainfall is heavy, the flow rate of rainwater and sewage entering the combined pipe is greater than a predetermined value, and the rain control component drives the barrier valve plate to flip down to block the inlet of the sewage outlet pipe.

5. The rural automatic rainwater and sewage separation structure as described in claim 4, characterized in that, The rain control component includes a support pipe exposed to the ground, a rain collection chamber that can slide up and down inside the support pipe, and a rain leakage hole is provided on the peripheral wall of the rain collection chamber. The rain collection chamber is connected to the barrier valve plate by a pull wire. When the rainfall is heavy, rainwater falls into the rain collection chamber and drives the rain collection chamber to move downward along the support pipe. The rain collection chamber in the downward state drives the barrier valve plate to flip down through the pull line, thereby blocking the inlet of the sewage outlet pipe.

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